Adjustable mold.



T. G. JOHNSON. ADJUSTABLE MOLD. APPLICATION FILED PHIL-28, 1907.

915,863, Patented Mar. 23, l909.

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T. G. JOHNSON. ADJUSTABLE MOLD. APPLICATION FILED" PEB. 28. 1907.

915,863. Patented Mar.23, 1909.

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T. G. JOHNSON. ADJUSTABLE MOLD. APPLIOATION FILED 31113.28. 1907.

Patented Mar. 23, 1909.

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THEODORE Gr. JOHNSON, OF KANSAS CITY, MISSOURI.

ADJUSTABLE' MOLD.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed February 28, 1907. Serial No. 359,837.

To all whom it may concern:

Be it known that I, Trinononn G. JOHNSON, a citizen of the UnitedStates, residing Vat Kansas City, in the county of Jackson and State ofMissouri, have invented certain new and useful Improvements kinAdjustable Molds, of which the following is a speciiication.

My invention relates to improvements in adjustable molds employed in theproduction of building blocks; and consists in the novel construction,combination and arrangement of parts hereinafter described, pointed outin the claims, and illustrated in the accompanying drawings, in which 1-.A

Figure 1 re resents a front elevation of the invention. lig. 2 is a planview of same. Fig. 3 is aside elevation of same. Fig. 4 is a verticalsection of same taken on line IV--IVV of Fig. 2. Fig. 5 is abrokensectional plan view of a vertically adjustable frame employed incarrying out the invention, taken on line V of Fig. 1. Fig. 6 is abroken front elevation of the invention provided with a modiiied form ofcore. Fig. 7 is a vertical section of same, taken on line VII-VII ofFig. 6.

Fig. 8 represents a hollow rectangular build.

ing-block; and Fig. 9 represents an L-shaped building-block formed by myinvention.

In carrying out the invention I employ a stand consisting of supportinglegs 1' and a consists of front and rear bars 7 united byv end bars 8.Bars '7 are of less height than bars 8, but are providedvat their endswith webs 9 which extend to the top of bars 8 and thus reinforce thelatter.

10 designates a pair of' rails communicating bars 7 and provided withforwardextensions 11 arranged in alinement with a pair of inclined'rails12, the latter being also vertically adjustable by any suitable means. j

13 designates a truck consisting of a platform 14, bearings 15 dependingtherefrom, and four flanged rollers 16 mounted upon axles 17 j ournaledin the bearings, said rollers being arranged to travel upon the rails 1012.

18 designates an olf-bearing late of the same size as platform 14 upon wiich itrests.

19 designates the adjustable mold which consists of a back wall 2()provided at one end with hinge-members 21, an end wall 22 rigidlysecured to the opposite end of the backlate, another end wall 23provided with inge-members 24 25, and a reversible front wall 26provided at its opposite ends with hinge members 27 28 either of whichmay be pivotally secured to hinges 25 by meansl of a pintle 29. Mold 19is supported a short distance above the top of the stand by means of apintle 30, to which hinge-members 21 24 are pivotally secured, and anantifriction roller 31 adapted to travel upon plate 4. Pintle 30 isrigidly secured to a boss 32 formed integral with the top of the standat the juncture of plates 3 and 4a. Roller 31 is mounted upon a pin 33journaled in a bracket 34 secured to the forward end of wall 22 andprovided at its lower portion with an outwardly extending lij 35'adapted to engage the underside of a ug 36 and thus assist pintle 3()in resisting the upward pressure of the off-bearing plate against theunderside of the mold. Lug 36 is secured to plate 4 and provided at yitsfront side with a web 37 to limit the forward movement of roller 31 whenwalls 3 and 22 are swung forward to the position shown by full lines,Fig. 2( The rearward movement of said roller is limited by means of astop 38 projecting upwardly from plate 3 at its juncture with plate 4.

The mold is securely locked in a closed position by means'of a latch 39,pivotally secured to wall 22, and one of keepers 40 se cured `inreversed positions at the opposite ends of wall 26 as shown in Fig. 1.

41 designates a main core detachably secured to wall 20 by means ofbolts and nuts 42, 43 respectively.

44 designates a supplemental core arranged between wall 23 and theadjacent end of core 41, said core being detachably secured to wall 2()by a bolt and nut 45, 46,

respectively. Core 44 is provided at its front side with a filling-block47 for forming an air-channel 47 a in one end of ing-block.

48 designates a lilling block consisting of a plurality of intermediatesections 49 and two beveled end sections 50 50rL all of which aredetachably secured to the face of the main core by bolts and nuts 51,52, respectively. lSaid filling-block is provided for the `purpose offorming a recess 53 in the inner each buildside oi' each building-block,and the abutting ends of its sections Vregister with. vertical grooves54 in the face of the main core so that when it is desired to makebuildingblocks of diiierent lengths the sections may be adjustedaccordingly. For instance, when it is desired to make building-blocks ofless length than the-inside et the mold a detachable partition 55 isslipped downwardly between the iront wall and the `face ot the core, seedotted lines, Fig. 2, said partition being held in position by one ofgrooves 54 and one of grooves 26". lDreparatory to placing partition 55in position the three adjacent intermediate sections are removed and thesection 50a is transferred to the position shown b y dotted lines, Fig.2. When it is desired to make a corner-block, supplemental core 44 isremoved, and when it is desired to make a veneering block the front wall26 is reversed as shown by dotted lines Fig. 2 the partition 55 is thenslipped downwardly into groove 26, in the lront Wall, and the oppositegroove 54. Preparatory to placing partition 55 in the last-mentionedposition, the adjacent section 4Q is remo-ved and section 50 istransferred to the position shown by dotted lines Fig. 2. Material isthen placed in the space bounded by partition 55 side wall 22, irontwall 26 and the tace of the main core.

llVhen it is desired to make two buildingblocks before opening the moldthe main and supplemental cores are removed and a core similar to thatshown in my application iiled April 1l, 1905, 6254,959, is substitutedtheretor, vertical grooves 56 57 being provided in wall 22 23,respectively, 'for that purpose.

When the mold is locked preparatory to making a building-block thevertically adjust-able track trame is pushed upwardly by a pair ot links58 until the oft-bearing plate is rought tightly into contact with theunderside ot the mold so that it will be impossible while tamping thematerial to torceit outwardly beneath the lower edge of said mold. Links58 are pivotally secured at theirupper ends to end-bars 8 and at theirlower ends to crank-arms 59 which latter are rigidly mounted upon ashaft 60 mounted in transverse bars 61 connecting the front and rearsupporting legs. Shaft 6() is operated by a hand-lever 62 adjustablysecured. upon one end ot said shal't by a nut 63 and provided near itsupper end with a sliding pawl 64 adapted to engage any ot the teeth o'la segment 65 secured to the upper portions ot the adjacent supportinglegs.

After the building-block has been formed the mold is thrown open asindicated by dotted lines, Fig. 2; lever 62 is then drawn tor- Wardly inthe direction indicated by arrow a in order to lower the truck and theverticallyadjustable frame until rails 10 are on alevel with the upperends of inclined rails 1 2. The

truck is then run to the lower end o1 the inclined track and theoil-bearing plate containing yhe green building-block is removed`there/from and set in. a convenient.' place to dry, another oil-bearingplate. is then placed upon the truck which latter is pushed baclmardlybeneath the mold prejntratory to 'forming another building-block.

TWhen only a 'l'ew lniilding-blocks are to be made the olli-bearingplates may be dis aenscd with by employing a number ot truclts andraising the platforms oi' the latter through a higher path and intocontact with the lower edge of the mold. To accomj'ilish this result,however, the track 'trame is adjusted to the position indicated bydotted lines, Fig. 4, b v adjusting the cranks 56 to the dotted.position. Nut 63 is loosened. preparatory to adjusting the'l'rame andthe cranks so that lever 62 may remain in the position shown in Fig. 3:then after said adjustment has been et- Vioctl-d the lever is againlocked upon the end oi' the shalt by tightening nut 6? so that saidlever may continue to operate within the liniits oil segment 65 to raiseand lower the traine and trucks through said higher path. ltails l2 arethen also adjusted to thedotted position shown in Fig. 4.

Then it is desired to torni lntilding-blmfks like that shown in Fig. S lsubstitute a disaj'ipearing core, shown in` Figs. 6 and 7, l'or thoseabove described. The introdlution ol' this core does not require anychanges in tht` stand, the vertically adjustable frame or the mold,consequently further description olI these parts is deemed unnecessary.Said disappearing core consists ol' a rectangular casting 66, taperingtoward its top portion and provided with an integral base 68 havingparallel sides arranged to enter openings 69 70, in olli-bearing plate1S:L and the truck platform 14, respectively. Said base is slightlywider than the adjoining portion ot' the core in order to form shoulders7l which contact with over-lapping lips 72 on the ollibearing plate andthus limit the. upward movein ent ol' the core. The lower portion ol'base 68 is provided with depending end plates 72 slidably arranged. inangle-iron guides 7 3 supported by brackets 74 extending inwardly Yfromrails 16. The core is raised and lowered by two pairs of toggles 75pivotally secured at their upper ends to plate 72 and rigidly secured'at their lower ends to shafts 76 journaled in bearings 77. Shafts 76 areprovided with and rocked in. opposite directions by two rigidly mountedintermeshing segmental gears 7 S operated by a handlever 79 secured toone ol' said shaits. Toggles 75 have pivotal joints 7 5L at theircentral portions which permit them to fold to the dotted position, asshown in Fig. 7 when it is desired to withdraw the core from thebuilding-block, the oit-bearing plate and the truck platform.

The longitudinal sides of the core are provided with centrally-disposedopenings 80 for the reception of filling-blocks 81 provided with lianges82 which contact with overlapping lips 83, surrounding openings 80, andthus limit the outward movement of said iilling-blocks. Saidfilling-blocks are drawn into the core, preparatory to lowering thelatter, by means of arms 84 pivotally secured at their upper ends toears 85 and rigidly mounted at their lower ends upon shafts 86, providedwith intermeshing segmental gears 87, operated by a lever 88 rigidlysecured to thecentral portionA of one of the shafts 86.

Having thus described my invention, what l claim and desire to secure`by Letters-Patent, is

1. ln an al aratus of the character described, a molli), a disappearingcore, means for raising and lowering said core into and out of the mold,filling blocks projecting through openings in the disa pearing core, andmeans for drawing sai( filling-blocks within said core.

2. In an apparatus of the character described, a mold, a disa pearinghollow core 'having side openings, spending end plates on said core,means for raising and lowering it into and out of the mold, fillingblocks loosely fitting said openings, and inde endent means mounted onsaid plates for c rawing theiilling blocks inward.

3. In an a aratus of the character de# scribed, a mold, a disappearinghollow core having side openings with surrounding li s, depending endplates on said core, means ibr raising and lowering it into and out ofthe mold, filling blocks loosely litting said openings and havingflanges contacting with said lips when the b ocks are (projected, andindependent means mounte on said plates for drawing the iilling blocksinward.

4. In an apparatus of the character described, the combination with amold, and an ofi bearing plate having an opening; of a disappearing corehaving a rectangular base adapted to fit said opening, toggle leversconnected at one end with the core, intermeshing se ments fast on theirother ends, and a lever or rocking one segment.

5. scribed, the combination with a mold, and an oil bearing plate havingan opening provided with surrounding lips; of a disappearing coretapering toward its top and having a rectangular base adapted to fitsaid opening, shoulders on said base adapted to contact with said lipswhen the core is raised, said core having side openings with surroundinglips, iilling blocks oosely fitting said openings and havino' flangescontacting with said lips when the b ocks are projected, platesdepending vfrom said core and suitably guided, means for raising andlowering the plates to move the core into and out ofthe mold, andindependent means mounted on said plates for projecting and retractingsaid "filling blocks.

In an apparatus of the character de-l ln'testilnony whereof l affix mysignature, I

in the presence of two witnesses.

THEODORE G. JOHNSON. Titnesses F. Gr. FISCHER, M. Cox.

